Home / 288,862.12-398,622.24-159,805.36

Finding the Fourth Proportional to 288,862.12, 398,622.24 and 159,805.36

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Solution

The fourth proportional to 288,862.12, 398,622.24 and 159,805.36 is: 220,527.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,862.12 : 398,622.24 = 159,805.36 : x
  2. Step 2: Convert to fraction form
    288,862.12/398,622.24 = 159,805.36/x
  3. Step 3: Cross multiply
    288,862.12x = 398,622.24 × 159,805.36
  4. Step 4: Simplify right side
    288,862.12x = 63,701,970,567.21
  5. Step 5: Solve for x
    x = 63,701,970,567.21/288,862.12
  6. Step 6: Final answer
    x = 220,527.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.